👀 Views: 280 💬 Answers: 1 📅 Created: 2025-06-07

node.js express security helmet JavaScript

I need help solving I'm trying to figure out I'm currently building a REST API using Node.js with the Express framework and I want to ensure that sensitive data is properly protected... I've integrated the Helmet middleware to set various HTTP headers for security, but I'm noticing a warning suggesting that some critical headers might be missing. Specifically, I'm seeing this warning: `Missing 'X-Content-Type-Options' header`. I've already included the following configuration in my Express app: ```javascript const express = require('express'); const helmet = require('helmet'); const app = express(); app.use(helmet()); // Using Helmet to secure HTTP headers app.get('/api/data', (req, res) => { res.json({ message: 'Secure Data' }); }); const PORT = process.env.PORT || 3000; app.listen(PORT, () => { console.log(`Server is running on port ${PORT}`); }); ``` In addition to this, I manually set the specific headers as follows: ```javascript app.use((req, res, next) => { res.setHeader('X-Content-Type-Options', 'nosniff'); next(); }); ``` Despite this, the warning persists. I've confirmed that my Helmet middleware is included before the route handling in my middleware stack. I've also tried updating Helmet to the latest version (5.0.0) just to ensure I wasn't missing any recent changes. What am I missing here? Is there another setting or configuration I need to adjust to resolve this warning about missing headers? Any suggestions or best practices for securing sensitive data with Express would be greatly appreciated! My team is using Javascript for this REST API. Am I missing something obvious? How would you solve this?